Pull-rod connection



1,679,686 P. E. SECKLER PULL ROD CONNECTION Filed Aprilz, '1927 2 Sheets-Sheet 1 PETER E. SECKLER Aug. 7, 1928. 1,679,686 I P. E. SECKLER PIYJLL ROD CONNECTION Filed April 2, 1927 2 Sheets-Sheet 2 m mm 6 11 0 PETE ESECKL-EF? Patented Aug. 7, 1928.

PETER E. SECKLER, OF TULSA, OKLAHOMA.

PULL-BOD CONNECTION.

Application filed April 2, 1927. Serial 1T0. 180,593.

This invention relates to the surface eduipment for pumping oil wells. and more particularly to pull rod connections with the power to operate pumping jacks at a distance 6 from the pumpin lant.

An important ject of the invention is to provide means for transmitting power from a suitable source to a reciprocating pull rod, .and to rovide means for holding the pull rod stat1onary, when desired, and disconnecting the source of power from the rod.

A further object is to provide a device of the above mentioned character, wherein a pair of cross-heads are employed, one of the 1 crossheads being reciprocable and adapted to connect the pull rod to the source of power to operate it, the other cross-head having means associated therewith for engagin the pull rod to maintain it in any desired xed position.

A further object is to provide a device of the above mentioned character, wherein similar operating means are employed for the rod engaging devices of the two cross-heads, 2 such operating means readily being adapted to be safely controlled by a single operator. A further object is to provide a device of the above mentioned character, wherein each cross-head is provided with a recess extend- 80 ing therethrough and provided with opposite converging walls adapted to be engaged by the similar converging faces of clutch blocks, whereby movement of one pair of clutch blocks in one direction is 36 adapted to cause them to engage the rod, while movement of the blocks in the opposite direction will release-the rod. h A further object is to provide a device of the above mentioned character which is particula-rly adapted for use in connection with horizontall reciprocating pull rods, one 0 said crosseads being stationary and provided with means for maintaining the clutch blocks in inoperative position to permit reciprocation of the pull rod by the clutch blocks of the movable crosshead, both sets of clutch .blocks being readily and safely controllable by a single operator.

. Other objects and advantages of the invention will become apparent during the course of the following description. f

In the drawings I have shown one embodiment of the'invention. In this showing: Figure 1 is a top view of the device,

f adapted to be reciprocated in the usual man- Figure 2 is an edge elevation of the same,

F1gure 3 is a similar view to Figure 1, parts being shown in section,

Flgure 4 is a detail section on line 44 of Fi re 1,

Figure 5 Figure 1,

Figure 6 is a similar view on line 6-6 of Figure 1, and

Figure 7 is a detail pers ective of the reciprocating cross-head an associated elements.

Referring to the drawings, the numeral 10 designates a horizontal bed late which is adapted to be rigidly secur on a suitable foundation preferably formed of concrete, to be supported thereby. Adjacent opposite ends, the bed plate is provided on opposite sldes with into 1 ears 11 through which bolts 12 extend, these bolts being secured to the concrete foundation, as will be obvious. The plate 10 is provided with upwardly extending sides 13 the inner faces of which are channeled to form dovetail trackwa s 14 which extend nearly throughout t e length of the bed'plate 10 and to a point spaced from the inner end as indicated at 15, beyond which the upper lip of the channel is cut away, for a purpose to be described.

Referring to Figures 1 and 6, the numeral 16 designates a stationary cross-head preferably formed integral with the bed plate and arranged adjacent the outer end thereof. This cross-head is provided with an openin 17 extending horizontally therethrough an provided with opposite converging faces 18.

he pull rod 19, or the like, is adapted to extend horizontall through the aperture provided in clutch locks'20 adapted to be inserted in the opening 17. The rod 19 is is a similar view on line 55 of nerilto operate a pumping jack over an oil we A pair of clutch blocks 20 are arranged in the opening 17 and are provided with outer faces 21 which converge toward their ends to fit against the converging faces 18 of the opening 17. The adjacent edge portions of the'blocks 20 are provided with complementary semicylindrical cut-out portions 22 surrounding the rod 19 and adapted to engage thereagainst under certain conditions-to be described. The outer ortion of the crosshead 16 isprovided wit oppositely arranged slots 23, each of which is arranged parallel to the inclined faces of the clutch blocks 20 andthe walls 18. Keys 24 are arranged to slide in the slots 23, the inner ends of these keys being driven into suitable openings in the blocks 20, while the outer ends of the keys project beyond the outer face ofv the cross-head 16. The outer face of the crosshead 16 is provided with a horizontal rib 25, having opposite inclined faces 26. An

operating member 27 is adapted to reciprocate longitudinally against the outer face of the cross-head and is provided with a slot.

28 corresponding in shape to and adapted to receive the rib 25. At opposite sides, the member 27 is provided with cut-out portions through which the outer ends of the keys are adapted to project. The member 27 is provided with a suitable handle 29, and it will be obvious that longitudinal movement of the member 27 will be transmitted to the keys 24, and thus to the blocks 20. An end I portion of the rib 'is provided with open ings 30 to receive a pin 31. When the blocks 25 .20 are in inoperative position, as shown in Figure 1, the pin 31 will be inserted in with an opening 35 extending therethrough and having opposite converging faces 36. Clutch blocks 37 are arranged in.the opening 35. These clutch blocks are similar in construction and operation to the blocks 20 previously described, and need not be referred to in detail. If desired, the complementary cut-out portions of both sets of clutch blocks may be provided with gripping teeth 38 as shown in Figure 7.

Keys 39, similar to the keys 24 previously described, are carried by the blocks 37 and project through slots 40 formed in the upper face of the cross-head 32. An operating member 41 is ada ted to actuate the keys 39, and hence the locks 37, in the manner previously described in connection with the operating member 27, the member 41 also being provided with a suitable handle 42.

The member 41 is slidably eonnectedto the cross-head '32 by a dove-tail rib 43 having a plurality of openings 44 in its outer 'face 1 to receive a pin 45. It will be noted that the inner. opening 44 and pin 45 are arranged at the outer end of the operating member 41 to lock theclutch on the rod 19 for imparting a continuous reciprocatory movement to the rod, as distinguished from the outer opening 30 and pin 31 on the stationary cross-head clutch member which are .adapted to secure the rod 19 in a fixed inoperative position.

A pair of rods 47 are threaded or other- I merely by inserting the portion 33 thereof between'the trackways 13andsliding the same forward to engage the inclined faces 34 with the inclined faces 14 of the trackways. This action readily is permitted by means of the cut awayv portions 15 of the trackways. After the cross-head thus has been placed in posit-ion it is maintained in position by the inclined faces 14 of the trackways. With the operating member 41 in the position shown in Figure 1, the keys 39.

will be arranged in their positions whereby the inner edge portions of the clutch blocks 37 will engage the pull rod 19. It will be apparent, therefore, that reciprocation of thecross-head 32 through the 'rods 47 is adapted to efiect the horizontal reciprocatory movement of the pull rod 19, the latter being firmly engaged by the clutch blocks 37. During this operation, the clutch blocks 20 of the stationary cross-head 16 will be arranged in the position shown in Figure 1,

with the member 31 in the inner opening 30 to free the clutch blocks 20 from contact with the pull rod 19. As previously stated, the openlngs 23 are inclined, and accord ingly, rearward movement of the keys 24 to the position shown in Figure 1 causes the faces 21 of the blocks 20 to slide against the inclined faces 18 of the opening 17. It will be apparent therefore that the blocks 20 will be disengaged from the rod 19 thus permitting free reciprocation thereof. When it is desired to hold the rod 19 stationary, the pins31 and45 may be removed thus permitting the operator to grasp the handles 29 and 42 to move the operating members 27 and 41 forwardly and rearwardly, respectively. This action-causes the rod to be released by the reciprocating clutch blocks 37, thus preventing further reciprocation of the rod 19, while the stationary blocks 20 will engage the rod to hold it in fixed position. A- reciprocating motion again may be transmitted to the rod merely by reversing the operation above described. When it is desired to take up slack in the pull rod, the clutch blocks 37 may be disengaged from the rod when the latter reaches a point adjacent its inward limit of movement while the clutch blocks 20 are simultaneously brought into engagement with the rod. Thus the outwardly freely with respect to the rod, and

Ill

I the pu when it reaches its outer imit of movement, the action of the clutch blocks may be reversed to release blocks 20 and bring the blocks 37 into engagement with the rod. It will be obvious that-the devicereadily is adapted to be safely controlled by a single operator.

It is to be understood that the form of the invention herewith shown and described is to be taken as apreferred example of the same, and that varlous changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims. I claim:

1. A device of the character described comprisin a bed plate adapted to be ar ranged ad acent and parallel to a pull rod, a stationary cross-head carried by said bed plate, means carried by said stationary crosshead and adapted to releasably engage the ull rod, areciprocating cross-head carried y said bed plate, and means carried by said reciprocating cross-head and adapted to releasably engage the plull rod."

'2. A device of t e character described comprising a bed plate adapted to be arranged adjacent and parallel to a pull rod, a stationary cross-head carried by said bed late, clutch members carried by said crossliead and adapted to releasably engage the pull rod, guides carried by said bed'plate, a second cross-head adapted to reciprocate in said ides, and releasable clutch'means carried y said second named cross-head and adapted to engage and disengage the pull rod. 3. A device of the character described comprising a horizontal bed plate adapted to be arranged adjacent and' parallel to a pull rod, a stationary cross-head carried by the outer'end of said bed plate and provided with an o ening through which the pull rod is adapte to extend, a pair of clutch blocks arranged in said opening and adapted to rey engage the pull rod, a reclprocating leasab cross-head carried by said bed plate and provided with an opening through which the pull rod is adapted to extend, and a pair of clutch blocks arranged in said last named openin anl adapted to releasably engage r0 4. A device of the character described comprising a horizontal bed plate adapted to be arranged adjacent and parallel to a ull rod, l a stationa end of sai bed plate and longitudinal openmgthroug rod is adaptedto extend, the opposite side 5 walls of said opening convergin their, outer ends, a pair of vertica cross-head carried by t eouter provided with a which the pull toward slidable clutch blocks arranged in said opening and haying outer faces, converging similar to and adapt ed to engage the converging side walls of said opening, the inner edge portions of said clutch blocks being adapted to engage the pull rod, trackways carried by .said bed plate, a reciprocating cross-head adapted to travel in said trackways and provided .with a horizontal opening through which the pull rod is adapted to extend, said I last named opening and having outer facesconverging similar in and adapted to engage the converging walls of said last named opening, the inner edge portions of said clutch blocks being adapted to engage the pull rod. 1

5. A device of the character described comprising a horizontal bed plate adapted to be arranged adjacent and parallel to a pull rod, a stationary cross-head carried by a the outer end of said bed plate and provided with a longitudinal opening through which the pull rod is adapted to extend, said opening, having opposite walls convergin toward their outer ends, a pair of clutch lfiocks having outer faces converging similar to and adapted to slide against the converging walls of said opening, a key carried by each of said clutch blocks, said cross-head being provided with slots converging similar to.

the converging walls of said opening and through which said keys are adapted to extend, the inner edges of said clutch blocks b ingadapted to engage the pull rod, a slidable operating mem r carried by said crosshead and adapted to engage the projecting portions of said keys, a reciprocating crosshead carried by said bed plate and provided with a longitudinal opening through which the pull rod is adapted to extend, said last named opening having opposite walls con-. verging toward their inner ends, a painof clutchblocks having outer faces converging similar to and ada ted to slide a,,key carried by each of said last nam clutch blocks, said last named cross-head being, provided with slots converging similar to the converging walls of said last named opening and through which said last named keys are'adapted to extend, the inner edge O st-the' converging walls 0 said last name openinegi,

maintain said first named operating member in a fixed position with said first named clutch blocks when in or out of engagement with the pull rod.

7., A device mi'isei'ucied in eecordaiice wieh claim 5 provided with treeiweys arranged at; opposite edges thereof and provided with upwardly converging inner fooes, said i'eciproceting eross-heed having 2e por'eioii adapted to contact with the inner feces of said tmekweys to The guidedi thereby, the

oveeee upper portions of the inner faces of said trackweys being cut away to permit the insei'tion of the traickwey engaging; portions of W said reciprocating cross-head.

In testimony whereof I my sigma mire,

PETER E, SEGMAER. 

